Piper Jaffray Companies, Duff & Phelps Corp., Pan American Silver Corp. and Mobile Mini, Inc.

CHICAGO--([ BUSINESS WIRE ])--Zacks.com releases details on a group of stocks that are currently members of the exclusive Zacks #5 Rank List a" Stocks to Sell Now. These stocks are currently rated as a Zacks Rank #5 (Strong Sell): Piper Jaffray Companiesa� (NYSE: [ PJC ])and Duff & Phelps Corp. (NYSE: [ DUF ]). Further, Zacks announced #4 Rankings (Sell) on two other widely held stocks: Pan American Silver Corp. (Nasdaq: [ PAAS ]) and Mobile Mini, Inc. (Nasdaq: [ MINI ]). To see the full Zacks #5 Rank List - Stocks to Sell Now visit: [ http://at.zacks.com/?id=92 ]

"Zacks Rank Guide: Harnessing the Power of Earnings Estimate Revisions"

Since inception in 1988, the S&P 500 has outperformed the Zacks #5 Rank List of Stocks to Sell Now by 80% annually (+2% vs. +10%). While the rest of Wall Street continued to tout stocks during the market declines of the last few years, Zacks told investors which stocks to sell or avoid.

Here is a synopsis of why PJC and DUF have a Zacks Rank of #5 (Strong Sell) and should most likely be sold or avoided for the next one to three months. Note that a #5 Strong Sell rating is applied to 5% of all the stocks in the Zacks Rank universe:

Piper Jaffray Companiesa� (NYSE: [ PJC ]) first-quarter earnings of 28 cents per share, reported on Apr 21, missed the Zacks Consensus Estimate by 48%. The last month has seen downward revisions by all the 4 covering analysts, pulling the full-year average forecast down by 43 cents to $2.37 per share. Moreover, the following yeara�s estimate fell 29 cents to $3.23 per share during that time.

Duff & Phelps Corp. (NYSE: [ DUF ]) announced first-quarter earnings of 19 cents per share on Apr 29, which was 4 cents short of the Zacks Consensus Estimate. Quarterly revenues were flat at $89.2 million, compared with last yeara�s $89.3 million. Duff & Phelps lagged analystsa� expectations in each of the last 4 quarters. The full-year average forecast slid 9 cents to 95 cents per share in the last 30 days as 6 analysts out of 7 cut estimates.

Here is a synopsis of why PAAS and MINI have a Zacks Rank of 4 (Sell) and should also most likely be sold or avoided for the next one to three months. Note that a #4 Sell rating is applied to 15% of all the stocks ranked by Zacks;

Pan American Silver Corp. (Nasdaq: [ PAAS ]) posted a first-quarter profit of 18 cents per share on May 10 that was 25% behind the average forecast. The Zacks Consensus Estimate for 2010 decreased a penny to $1.18 per share over the past week as 2 out of 12 analysts cut back on projections. The full-year estimate was pegged at $1.22 per share a month ago.

Mobile Mini, Inc. (Nasdaq: [ MINI ]) recorded a 60% slump in first-quarter earnings as revenues declined to $76.9 million from $100 million a year ago. On May 5, the company reported earnings per share of 9 cents, which fell 47% short of the Zacks Consensus Estimate. For the current year, the average forecast moved down 15 cents to a profit of 67 cents per share in the last 7 days as 5 analysts out of 6 lowered expectations.

Truly taking advantage of the Zacks Rank requires the understanding of how it works. The free special report; aZacks Rank Guide: Harnessing the Power of Earnings Estimate Revisionsa is available to provide this insightful background. Download a free copy now to prosper in the years to come at [ http://at.zacks.com/?id=93 ]

About the Zacks Rank

Since 1988, the Zacks Rank has proven that "Earnings estimate revisions are the most powerful force impacting stock prices." Since inception in 1988, #1 Rank Stocks have generated an average annual return of +27%. During the 2000-2002 bear market, Zacks #1 Rank stocks gained +43.8%, while the S&P 500 tumbled -37.6%. Also note that the Zacks Rank system has just as many Strong Sell recommendations (Rank #5) as Strong Buy recommendations (Rank #1). Since 1988, Zacks Rank #5 stocks have significantly underperformed the S&P 500 (-0.9% versus +9%). Thus, the Zacks Rank system allows investors to truly manage portfolio trading effectively.

Visit [ http://www.zacks.com/performance ] for information about the performance numbers displayed in this press release.

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Disclaimer: Past performance does not guarantee future results. Investors should always research companies and securities before making any investments. Nothing herein should be construed as an offer or solicitation to buy or sell any security.

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Piper Jaffray Companies, Duff & Phelps Corp., Pan American Silver Corp. and Mobile Mini, Inc.